I've added full head tracking and weapon tracking to Half-Life 2 in preparation for the Oculus Rift dev kit launch. Once the official rift apis are available I'll integrate them, giving people ~70 hours of content (this also works for episode 1 & 2, the lost coast and tons of user generated maps, etc) that they can use to test out their Rift.

With the recent release of Natural Selection 2 [Available for sale on Steam and other places! ( http://www.naturalselection2.com/ )], RockPaperShotgun has written a great article mixed in with some direct commentary from some of the developers of NS2.

The article is a wonderfully entertaining read for gaming enthusiasts, and the game is definitely worth the wait.